Peters



H. -W. OSTROM. 5

Cultivator.

N0 69.239 Patented Sept. 24, 1867..

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HENRY W. OSTROM, OF GRAND RAPIDS, MICHIGAN.

Letters Patent No. 09,239, dated September 24, 1867.

IMPROVEMENT IN HARROW GULTIVATORS.

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TO ALL WHOM IT MAY concnnn:

Be it known that I, HENRY V. OSTROM, of Grand Rapids, in the county ofKent, and State of Michigan,- have invented a new and useful Improvementin Harrow Cultivator; and I do hereby declare that the following is afull, clear, and exact description thereof, which will enable thoseskilled in the art to make and use thc same, reference being had to theaccompanying drawings, forming part of this specification, in which-Figure 1 is a side view of my improved cultivator.

Figure 2 is a top view of the same.

Similar'letters of reference indicate corresponding parts.

This invention relates to a newimproved cultivator or liarrow cultivatorteeth to the ends of a set of slats or bars which are hung upon a framein such a manner that the teeth can rise and fall to adapt themselves tothe inequalities of the surface of the ground. Connected with the frameis a pair of handles, by which the teeth may be made to penetrate theearth more or less, as desired.

The advantage of my improvement consists in its working perfectly inrough and stony land, as each slat or bar moves freely, independently ofthe others, so that it can rise or fall when the tooth strikes a stoneor falls in a hole without afl ecting their operation. When the teeth ina cultivator or harrow are all set rigidly in the frame, if anobstruction strikes one of the teeth, the whole frame is shocked, andthe other teeth are thrown out, consequently the work is not evenlyperformed. This difficulty is corrected by my improved suspended harrowteeth. Another advantage consists in the facility with which theimplementis moved from place to place without injury to the teeth, bysimply turning up the bars to which they are attached, so they may restupon a movable bar, as hereinafter described. I

A A represents a strong square-sided frame, mounted at the front end ontwo guide-wheels B B, to be drawn by a team as usual. Between the sidesof the frame a set of bars, a a a, are hung at one end upon a rod, 6,running across the front part of the frame, which bars a a are separatedfrom each other by blocks 0 c, placed between them on the rod Z), tokeep them even and allow them to work up and down freely. The bars maybe separated in other ways. Onthe top of the sides of the frame is abar,d, which bears upon the upper sides of the suspended bars a a, and maybe moved forward or backward in its position thereon, 'to regulate theleverage of the draught on the cultivators and force them deeper orshallower, as required. The ends of the movable bar (1 are secured underrails c e, by pins h it. On the outer ends of thesuspcnded bars a carefixed ordinary cultivator teeth a s. A pair of handles, 7c is, isattached to a cross-bar, m, which rests on the rear ends of the bars aa. The handles are hooked at the front ends to the top of the frame, andthe bar in may be pressed down by them, when desired, to force the teethinto the ground.

The operation of the implement is obvious, as before described, andtheteeth may bo'raised from the ground by resting the bars a a upon themovable bar (Z d, to move the harrow from place to place without injury.

Having described my invention, I claim as new, and desire to secure byLetters Patent- The combination of the frame A mounted on guide-wheels BB, the bars a a suspended on the cross-rod 6, the movable cross bar (Z,and the cross-bar in attached to the handles is is, arranged andoperating as and forthe purpose herein described.

HENRY W. OSTROM.

Witnesses:

Aarnun Mares, ALFRED CRAWFORD.

, and consists in attaching a series of ordinary

